US2592673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety valve
Assignee: ACF Industries Inc
•
Filing: 1945-07-11
•
Granted: 1952-04-15
•
Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Folmsbee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:25
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52408; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/18; F16K15/182; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US143644A
Cited
US415469A
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US440315A
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US593476A
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US1718730A
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US1984770A
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US2086942A
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US1877859A
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US1974274A
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US1976578A
Cited
US2320339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |